/* ===================================
   绵阳亿铭科技 - 弱电工程企业网站样式
   配色方案：科技蓝主题
   创建日期：2026-05-23
   更新日期：2026-05-24（全面修复样式问题）
   =================================== */

/* CSS变量 - 科技蓝配色方案 */
:root {
    --primary: #0056b3;       /* 科技蓝 - 主色调 */
    --primary-dark: #003d80;   /* 深蓝 - 标题/导航背景 */
    --accent: #00a8e8;        /* 亮蓝 - 按钮/强调元素 */
    --bg-light: #f5f7fa;      /* 浅灰蓝 - 页面背景 */
    --text-dark: #1a1a2e;     /* 深色文字 */
    --text-gray: #6c757d;     /* 辅助文字 */
    --border: #dee2e6;        /* 边框色 */
    --success: #28a745;       /* 成功/在线状态 */
    --white: #ffffff;
    --shadow: rgba(0, 86, 179, 0.1); /* 阴影颜色 */
    --card-bg: #ffffff;        /* 卡片背景色 */
    --card-shadow: 0 4px 12px rgba(0, 86, 179, 0.1); /* 卡片阴影 */
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent);
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-center {
    text-align: center;
}

/* ===================================
   导航栏 - 修复问题9（两行字）和问题10（分隔符）
   =================================== */
.navbar {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    box-shadow: 0 2px 10px rgba(0, 86, 179, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
    min-height: 70px; /* 固定高度，防止换行 */
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px; /* 上下padding设为0，由height控制 */
    height: 70px; /* 固定高度 */
}

.nav-brand a {
    display: flex;
    align-items: center;
    color: var(--white);
    font-size: 20px;
    font-weight: bold;
    white-space: nowrap; /* 防止换行 */
}

.nav-brand .logo {
    height: 40px;
    margin-right: 10px;
}

.brand-text {
    color: var(--white);
    white-space: nowrap; /* 防止换行 */
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 25px; /* 减小间距，防止换行 */
    align-items: center;
    height: 100%;
}

.nav-menu li {
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-menu a {
    color: var(--white);
    font-size: 15px; /* 减小字体，防止换行 */
    padding: 10px 0;
    position: relative;
    white-space: nowrap; /* 防止换行 */
    display: flex;
    align-items: center;
    height: 100%;
}

/* 移除分隔符，统一为简单链接 */
.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

/* 移动端导航切换 */

/* ===== Navbar Dropdown Submenu ===== */
.nav-menu li {
    position: relative;
}

.nav-menu .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: rgba(0, 45, 90, 0.98);
    backdrop-filter: blur(10px);
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    padding: 10px 0;
    z-index: 1000;
    flex-direction: column;
    gap: 0;
    height: auto;
    animation: fadeInDown 0.25s ease;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.nav-menu li:hover > .dropdown-menu {
    display: flex;
}

.nav-menu .dropdown-menu a {
    padding: 10px 20px;
    font-size: 14px;
    white-space: nowrap;
    border-bottom: none;
    justify-content: flex-start;
}

.nav-menu .dropdown-menu a::after {
    display: none;
}

.nav-menu .dropdown-menu a:hover {
    background: rgba(0, 180, 255, 0.15);
    padding-left: 26px;
}

.nav-menu .has-dropdown > a::after {
    content: ' ▾';
    font-size: 11px;
    margin-left: 4px;
    opacity: 0.7;
}

/* ===== Three-level dropdown menu ===== */
/* Level-2 item that has children — must be relative so level-3 submenu aligns to it */
.nav-menu .dropdown-menu .has-submenu {
    position: relative;
}
.nav-menu .dropdown-menu .has-submenu > a {
    position: relative;
    padding-right: 32px;
}
.nav-menu .dropdown-menu .has-submenu > a::after {
    content: '▸';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    opacity: 0.6;
    display: block;
    /* 重置一级导航的下划线动画属性，避免hover时出现横跨整行的下划线 */
    bottom: auto;
    left: auto;
    width: auto;
    height: auto;
    background: none;
    transition: none;
}

/* 二级菜单项悬停时，文字下方显示短横线动画 */
.nav-menu .dropdown-menu a > .nav-text {
    position: relative;
    display: inline-block;
}
.nav-menu .dropdown-menu a > .nav-text::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}
.nav-menu .dropdown-menu a:hover > .nav-text::after {
    width: 100%;
}

/* 三级菜单项同样显示文字下方短横线动画 */
.nav-menu .dropdown-menu .submenu a > .nav-text {
    position: relative;
    display: inline-block;
}
.nav-menu .dropdown-menu .submenu a > .nav-text::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}
.nav-menu .dropdown-menu .submenu a:hover > .nav-text::after {
    width: 100%;
}

/* Level-3 submenu: appears on hover of level-2 item */
.nav-menu .dropdown-menu .has-submenu > .submenu {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 200px;
    background: rgba(0, 45, 90, 0.98);
    backdrop-filter: blur(10px);
    border-radius: 0 8px 8px 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    padding: 10px 0;
    z-index: 1001;
    animation: fadeInRight 0.2s ease;
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(-8px); }
    to { opacity: 1; transform: translateX(0); }
}

.nav-menu .dropdown-menu .has-submenu:hover > .submenu {
    display: flex;
    flex-direction: column;
}

.nav-menu .dropdown-menu .has-submenu:hover > a {
    background: rgba(0, 180, 255, 0.15);
    color: #fff;
}

/* Level-2 group header (top-level category name) */
.nav-menu .dropdown-menu .dropdown-group-header {
    padding: 8px 20px 4px;
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 1px;
    pointer-events: none;
    font-weight: 600;
}
.nav-menu .dropdown-menu .dropdown-divider {
    height: 1px;
    background: rgba(255,255,255,0.1);
    margin: 6px 12px;
}
.nav-menu .dropdown-menu .sub-item {
    padding-left: 28px;
    font-size: 13px;
    opacity: 0.9;
}


.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--white);
    margin: 3px 0;
    transition: 0.3s;
}

/* ===================================
   首页横幅（Hero Section）
   =================================== */
.hero-section {
    position: relative;
    background: linear-gradient(rgba(0, 61, 128, 0.7), rgba(0, 86, 179, 0.7)), url('../images/hero-bg.svg');
    background-size: cover;
    background-position: center;
    padding: 120px 0;
    text-align: center;
    color: var(--white);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.3);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: bold;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 15px;
}

.hero-desc {
    font-size: 18px;
    margin-bottom: 30px;
    color: rgba(255,255,255,0.9);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
}

.btn-outline:hover {
    background: var(--accent);
    color: var(--white);
    border-color: var(--accent);
}

.btn-small {
    padding: 8px 20px;
    font-size: 14px;
    background: var(--primary);
    color: var(--white);
    border-radius: 4px;
    display: inline-block;
    border: none;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-small:hover {
    background: var(--primary-dark);
    color: var(--white);
}

/* 产品卡片统一样式 */
.product-card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    flex: 0 0 calc(25% - 23px);
    min-width: 240px;
}
.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(0,86,179,0.18);
}
.product-card .product-card-img {
    height: 200px;
    overflow: hidden;
    background: #f0f4f8;
}
.product-card .product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}
.product-card:hover .product-card-img img {
    transform: scale(1.05);
}
.product-card .product-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.product-card .product-card-body h3 {
    font-size: 1.05em;
    color: var(--text-dark);
    margin-bottom: 6px;
    line-height: 1.4;
}
.product-card .product-card-body h3 a {
    color: inherit;
    text-decoration: none;
}
.product-card .product-card-body h3 a:hover {
    color: var(--primary);
}
.product-card .product-card-sub {
    color: #888;
    font-size: 0.85em;
    margin-bottom: 8px;
}
.product-card .product-card-desc {
    color: #666;
    font-size: 0.88em;
    line-height: 1.5;
    margin-bottom: 12px;
    flex: 1;
}
.product-card .product-card-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: auto;
}

.btn-white {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
}

.btn-white:hover {
    background: transparent;
    color: var(--white);
}

/* ===================================
   区块样式
   =================================== */
.section {
    padding: 80px 0;
}

.section.bg-light {
    background: var(--bg-light);
}

.section.bg-primary {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
}

.section-title {
    font-size: 36px;
    text-align: center;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.section.bg-primary .section-title {
    color: var(--white);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent);
    margin: 10px auto;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 50px;
}

/* ===================================
   核心业务卡片
   =================================== */
.services-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.service-card {
    flex: 0 0 calc(33.333% - 20px);
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 40px 30px;
    text-align: center;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    box-shadow: var(--card-shadow);
}

.service-card:hover {
    box-shadow: 0 8px 24px rgba(0, 86, 179, 0.2);
    transform: translateY(-5px);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary);
}

.service-card p {
    color: var(--text-gray);
    margin-bottom: 20px;
}

.service-link {
    color: var(--accent);
    font-weight: 500;
}

.service-link:hover {
    color: var(--primary);
}

/* ===================================
   关于我们预览
   =================================== */
.about-preview {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text .section-title {
    text-align: left;
}

.about-text .section-title::after {
    margin: 10px 0;
}

.about-text p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.about-features {
    list-style: none;
    margin: 20px 0;
}

.about-features li {
    padding: 8px 0;
    font-size: 16px;
}

.about-image {
    flex: 1;
}

.about-image img {
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow);
}

/* ===================================
   项目案例 - 修复问题4（卡片样式单调）和问题5（查看详情）
   =================================== */
.cases-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.case-card {
    flex: 0 0 calc(33.333% - 20px);
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    box-shadow: var(--card-shadow);
    /* 添加背景色 */
    background: linear-gradient(to bottom, var(--white) 0%, var(--bg-light) 100%);
}

.case-card:hover {
    box-shadow: 0 8px 24px rgba(0, 86, 179, 0.2);
    transform: translateY(-5px);
}

.case-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.case-info {
    padding: 20px;
    /* 添加背景色 */
    background: var(--bg-light);
    border-top: 3px solid var(--accent);
}

.case-info h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.case-info p {
    color: var(--text-gray);
    font-size: 14px;
    margin-bottom: 15px;
}

/* 案例标签 */
.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary);
    color: var(--white);
    border-radius: 4px;
    font-size: 12px;
    margin-right: 8px;
    margin-bottom: 8px;
}

/* 案例详情按钮 */
.btn-detail {
    padding: 8px 20px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s ease;
}

.btn-detail:hover {
    background: var(--primary-dark);
}

/* 案例详情模态框 */
.case-detail {
    position: relative;
    background: var(--white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow);
    margin-top: 30px;
    border: 2px solid var(--accent);
}

.close-detail {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 32px;
    cursor: pointer;
    color: var(--text-gray);
}

.close-detail:hover {
    color: var(--text-dark);
}

.case-detail h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--primary);
}

.case-detail-content {
    display: flex;
    gap: 40px;
}

.case-images {
    flex: 1;
}

.case-images img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 15px;
}

.case-description {
    flex: 1;
}

.case-description h3 {
    font-size: 20px;
    margin-top: 25px;
    margin-bottom: 15px;
    color: var(--primary);
}

.case-description p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.case-description ul {
    margin-bottom: 15px;
    padding-left: 20px;
}

.case-description li {
    margin-bottom: 8px;
    line-height: 1.6;
}

/* ===================================
   页面标题区（page-header）
   =================================== */
.page-header {
    background: linear-gradient(135deg, #001a33, #003366 40%, #004d99 70%, #0056b3);
    color: var(--white);
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 2px solid rgba(0,200,255,0.3);
}

/* Tech decoration for page header */
.page-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(0,180,255,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,180,255,0.06) 1px, transparent 1px),
        radial-gradient(circle at 20% 30%, rgba(0,150,255,0.08) 1px, transparent 1px),
        radial-gradient(circle at 80% 70%, rgba(0,200,255,0.06) 1px, transparent 1px);
    background-size: 60px 60px, 60px 60px, 120px 120px, 120px 120px;
    animation: gridMove 15s linear infinite;
}

.page-header::after {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background:
        radial-gradient(circle at 20% 50%, rgba(0,180,255,0.12) 0%, transparent 45%),
        radial-gradient(circle at 80% 20%, rgba(0,220,255,0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 90%, rgba(0,140,255,0.06) 0%, transparent 35%);
    animation: pulse 6s ease-in-out infinite alternate;
}

/* Additional tech decoration: corner accents */
.page-header .container::before {
    content: '';
    position: absolute;
    top: -20px; left: -20px;
    width: 80px; height: 80px;
    border-top: 2px solid rgba(0,200,255,0.4);
    border-left: 2px solid rgba(0,200,255,0.4);
}
.page-header .container::after {
    content: '';
    position: absolute;
    bottom: -20px; right: -20px;
    width: 80px; height: 80px;
    border-bottom: 2px solid rgba(0,200,255,0.4);
    border-right: 2px solid rgba(0,200,255,0.4);
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

@keyframes pulse {
    0% { opacity: 0.5; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.1); }
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    font-size: 44px;
    margin-bottom: 12px;
    text-shadow: 0 2px 15px rgba(0,0,0,0.4), 0 0 40px rgba(0,150,255,0.2);
    letter-spacing: 4px;
    position: relative;
    display: inline-block;
}

/* Scan line effect under title */
.page-header h1::after {
    content: '';
    position: absolute;
    bottom: -8px; left: 0;
    width: 100%; height: 2px;
    background: linear-gradient(90deg, transparent, rgba(0,200,255,0.7), transparent);
    animation: scanLine 3s ease-in-out infinite;
}

@keyframes scanLine {
    0%, 100% { opacity: 0.3; transform: scaleX(0.5); }
    50% { opacity: 1; transform: scaleX(1); }
}

.page-header h1::before {
    content: '// ';
    color: var(--accent);
    font-family: 'Consolas', monospace;
    font-weight: normal;
}

.page-header-desc {
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 20px;
}

/* 面包屑导航 - hidden per user request */
.breadcrumb { display: none; }

/* ===================================
   产品详情页 - 修复问题8（在线询价样式）
   =================================== */
.product-detail {
    display: flex;
    gap: 50px;
    align-items: flex-start;
    margin-bottom: 50px;
}

.product-image {
    flex: 1;
}

.product-image img {
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow);
}

.product-info {
    flex: 1;
}

.product-info h3 {
    font-size: 28px;
    margin-bottom: 15px;
    color: var(--primary);
}

.product-price {
    font-size: 24px;
    color: #e74c3c;
    font-weight: bold;
    margin-bottom: 20px;
}

.price-note {
    font-size: 14px;
    color: var(--text-gray);
    font-weight: normal;
}

.product-features {
    margin-bottom: 30px;
}

.product-features h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.product-features ul {
    list-style: none;
}

.product-features li {
    padding: 8px 0;
    font-size: 15px;
    color: var(--text-gray);
}

/* 在线询价表单 - 修复样式 */
.inquiry-form {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 8px;
    margin-top: 30px;
    border: 2px solid var(--accent);
}

.inquiry-form h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--primary);
}

.inquiry-form .form-group {
    margin-bottom: 20px;
}

.inquiry-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-dark);
}

.inquiry-form input,
.inquiry-form textarea,
.inquiry-form select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
}

.inquiry-form input:focus,
.inquiry-form textarea:focus,
.inquiry-form select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--shadow);
}

.inquiry-form .btn {
    width: 100%;
    margin-top: 10px;
}

/* ===================================
   解决方案页 - 修复问题6（缺少图片）和问题7（筛选无反应）
   =================================== */
.solution-nav {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.solution-nav-item {
    padding: 10px 20px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-dark);
    transition: all 0.3s ease;
    cursor: pointer;
}

.solution-nav-item:hover,
.solution-nav-item.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.solution-detail {
    margin-bottom: 50px;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 8px;
    border: 2px solid var(--accent);
}

.solution-header {
    margin-bottom: 30px;
}

.solution-target {
    font-size: 16px;
    color: var(--text-gray);
    margin-top: 10px;
}

.solution-content {
    display: flex;
    gap: 50px;
    align-items: flex-start;
}

.solution-image {
    flex: 1;
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    box-shadow: var(--card-shadow);
}

.solution-image img {
    max-width: 100%;
    border-radius: 8px;
}

/* 解决方案占位符图片 */
.solution-image-placeholder {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
    font-weight: bold;
}

.solution-info {
    flex: 1;
}

.solution-info h3 {
    font-size: 20px;
    margin-top: 25px;
    margin-bottom: 15px;
    color: var(--primary);
}

.solution-features {
    margin: 20px 0;
}

.feature-item {
    margin-bottom: 20px;
    padding: 15px;
    background: var(--white);
    border-radius: 4px;
    border-left: 4px solid var(--accent);
}

.feature-item h4 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--primary);
}

.feature-item p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

.solution-cta {
    margin-top: 30px;
    display: flex;
    gap: 15px;
}

/* ===================================
   案例筛选
   =================================== */
.case-filter {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 20px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* ===================================
   技术支持页 - 修复问题1、2、3
   =================================== */
.support-grid {
    display: flex;
    gap: 40px;
}

.support-main {
    flex: 2;
}

.support-sidebar {
    flex: 1;
}

/* 技术文章列表 */
.article-list {
    margin-bottom: 40px;
}

.article-card {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-light);
    padding: 20px;
    border-radius: 8px;
    transition: box-shadow 0.3s ease;
}

.article-card:hover {
    box-shadow: var(--card-shadow);
}

.article-card:last-child {
    border-bottom: none;
}

.article-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--text-gray);
}

.article-category {
    color: var(--accent);
    font-weight: 500;
}

.article-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.article-card h3 a {
    color: var(--text-dark);
}

.article-card h3 a:hover {
    color: var(--primary);
}

.article-card p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 10px;
}

.read-more {
    color: var(--accent);
    font-weight: 500;
    font-size: 14px;
}

.read-more:hover {
    color: var(--primary);
}

/* 分页 - 修复问题2 */
.pagination {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 40px;
}

.page-btn {
    padding: 8px 15px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-dark);
    transition: all 0.3s ease;
    cursor: pointer;
}

.page-btn:hover,
.page-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* 侧边栏 */
.sidebar-widget {
    margin-bottom: 30px;
    padding: 25px;
    background: var(--bg-light);
    border-radius: 8px;
    border: 2px solid var(--accent);
}

.sidebar-widget h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--primary);
}

/* FAQ列表 */
.faq-list {
    list-style: none;
}

.faq-item {
    margin-bottom: 15px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 15px;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item summary {
    cursor: pointer;
    font-weight: 500;
    color: var(--text-dark);
    padding: 8px 0;
}

.faq-item summary:hover {
    color: var(--primary);
}

.faq-item p {
    padding: 10px 0;
    color: var(--text-gray);
    line-height: 1.6;
}

/* 下载列表 - 修复问题3 */
.download-list {
    list-style: none;
}

.download-list li {
    margin-bottom: 12px;
    padding: 12px;
    background: var(--white);
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

.download-list li:hover {
    box-shadow: 0 2px 8px var(--shadow);
    border-color: var(--accent);
}

.download-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-dark);
}

.download-list a:hover {
    color: var(--primary);
}

.download-icon {
    font-size: 24px;
}

.download-name {
    flex: 1;
    font-size: 14px;
}

.download-size {
    font-size: 12px;
    color: var(--text-gray);
}

/* 支持表单 */
.support-form .form-group {
    margin-bottom: 15px;
}

.support-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-dark);
}

.support-form input,
.support-form textarea,
.support-form select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
}

.support-form input:focus,
.support-form textarea:focus,
.support-form select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--shadow);
}

/* ===================================
   关于我们页
   =================================== */
.about-detail {
    margin-bottom: 50px;
}

.about-text-full {
    max-width: 900px;
    margin: 0 auto;
}

.about-intro {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 30px;
    color: var(--text-gray);
}

.about-stats {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 16px;
    color: var(--text-gray);
}

/* 企业文化 */
.culture-grid {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.culture-card {
    flex: 0 0 calc(25% - 22.5px);
    padding: 30px;
    background: var(--white);
    border-radius: 8px;
    text-align: center;
    transition: box-shadow 0.3s ease;
    box-shadow: var(--card-shadow);
}

.culture-card:hover {
    box-shadow: 0 8px 24px rgba(0, 86, 179, 0.2);
}

.culture-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.culture-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--primary);
}

.culture-card p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* 资质证书 */
.certificates-grid {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.certificate-card {
    flex: 0 0 calc(25% - 22.5px);
    padding: 20px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: center;
    transition: box-shadow 0.3s ease;
    box-shadow: var(--card-shadow);
}

.certificate-card:hover {
    box-shadow: 0 8px 24px rgba(0, 86, 179, 0.2);
}

.certificate-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 15px;
}

.certificate-card h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--primary);
}

.certificate-card p {
    font-size: 13px;
    color: var(--text-gray);
}

/* 服务流程 */
.process-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.process-item {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
}

.process-item::before {
    content: '';
    position: absolute;
    left: 60px;
    top: 80px;
    bottom: -40px;
    width: 2px;
    background: var(--border);
}

.process-item:last-child::before {
    display: none;
}

.process-number {
    flex: 0 0 80px;
    height: 80px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
}

.process-content {
    flex: 1;
    padding-top: 15px;
}

.process-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--primary);
}

.process-content p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* 团队介绍 */
.team-grid {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.team-card {
    flex: 0 0 calc(25% - 22.5px);
    padding: 30px;
    background: var(--white);
    border-radius: 8px;
    text-align: center;
    transition: box-shadow 0.3s ease;
    box-shadow: var(--card-shadow);
}

.team-card:hover {
    box-shadow: 0 8px 24px rgba(0, 86, 179, 0.2);
}

.team-card img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
}

.team-card h3 {
    font-size: 20px;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.team-position {
    font-size: 14px;
    color: var(--accent);
    margin-bottom: 10px;
}

.team-desc {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* 客户评价 */
.testimonials-grid {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.testimonial-card {
    flex: 0 0 calc(33.333% - 20px);
    padding: 30px;
    background: var(--white);
    border-radius: 8px;
    transition: box-shadow 0.3s ease;
    box-shadow: var(--card-shadow);
}

.testimonial-card:hover {
    box-shadow: 0 8px 24px rgba(0, 86, 179, 0.2);
}

.testimonial-text {
    margin-bottom: 20px;
}

.testimonial-text p {
    font-style: italic;
    color: var(--text-gray);
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    gap: 15px;
    align-items: center;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 3px;
}

.author-position {
    font-size: 14px;
    color: var(--text-gray);
}

/* ===================================
   联系我们页
   =================================== */
.contact-grid {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-form-wrapper {
    flex: 1;
}

.contact-intro {
    margin-bottom: 30px;
    color: var(--text-gray);
    line-height: 1.8;
}

.contact-details {
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: 8px;
    border-left: 4px solid var(--accent);
}

.contact-icon {
    font-size: 36px;
    flex: 0 0 50px;
}

.contact-text h3 {
    font-size: 16px;
    margin-bottom: 5px;
    color: var(--primary);
}

.contact-text p {
    color: var(--text-gray);
    margin-bottom: 3px;
}

.contact-note {
    font-size: 13px;
    color: var(--text-gray);
}

/* 社交媒体 */
.social-links {
    margin-top: 40px;
}

.social-links h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--primary);
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--bg-light);
    border-radius: 50%;
    font-size: 24px;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--primary);
    color: var(--white);
}

/* 联系表单 */
.contact-form .form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 0;
}

.contact-form .form-group {
    flex: 1;
    margin-bottom: 20px;
}

.contact-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-dark);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--shadow);
}

.required {
    color: #e74c3c;
}

/* 地图容器 */
.map-container {
    margin-top: 30px;
}

.map-placeholder {
    width: 100%;
    height: 400px;
    background: var(--bg-light);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
}

.map-placeholder p {
    margin: 10px 0;
}

/* 交通指南 */
.traffic-grid {
    display: flex;
    gap: 30px;
    justify-content: center;
}

.traffic-item {
    flex: 0 0 calc(33.333% - 20px);
    padding: 30px;
    background: var(--bg-light);
    border-radius: 8px;
    text-align: center;
    border: 2px solid var(--accent);
}

.traffic-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.traffic-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--primary);
}

.traffic-item p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* 服务承诺 */
.promise-grid {
    display: flex;
    gap: 30px;
    justify-content: center;
}

.promise-item {
    flex: 0 0 calc(25% - 22.5px);
    padding: 30px;
    background: var(--white);
    border-radius: 8px;
    text-align: center;
    transition: box-shadow 0.3s ease;
    box-shadow: var(--card-shadow);
}

.promise-item:hover {
    box-shadow: 0 8px 24px rgba(0, 86, 179, 0.2);
}

.promise-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.promise-item h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--primary);
}

.promise-item p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* ===================================
   底部
   =================================== */
.footer {
    background: #1a1a2e;
    color: #ccc;
    padding: 60px 0 20px;
    overflow-x: hidden;
}

.footer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col {
    flex: 1;
    min-width: 200px;
}

.footer-col h3 {
    font-size: 18px;
    margin-bottom: 18px;
    color: #e8c44a;
}

.footer-col p,
.footer-col li {
    font-size: 14px;
    line-height: 2;
    color: #aaa;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-col a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: #e8c44a;
}
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
}

/* ===================================
   404错误页面
   =================================== */
.error-page {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
}

.error-content {
    max-width: 600px;
}

.error-code {
    font-size: 120px;
    font-weight: bold;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 20px;
}

.error-message {
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.error-desc {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 40px;
}

.error-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.error-search {
    max-width: 500px;
    margin: 30px auto;
}

.error-search form {
    display: flex;
    gap: 10px;
}

.error-search input {
    flex: 1;
    padding: 10px 15px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
}

.error-search button {
    padding: 10px 20px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.error-search button:hover {
    background: var(--primary-dark);
}

.error-links {
    margin-top: 40px;
}

.error-links h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.error-links ul {
    list-style: none;
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.error-links li a {
    color: var(--primary);
    font-size: 16px;
}

.error-links li a:hover {
    color: var(--accent);
}

/* ===================================
   响应式设计
   =================================== */
@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 250px;
        height: 100vh;
        background: var(--primary-dark);
        flex-direction: column;
        padding: 80px 30px 30px;
        transition: right 0.3s ease;
        gap: 0;
        z-index: 999;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu li {
        border-bottom: 1px solid rgba(255,255,255,0.1);
        height: auto;
    }

    .nav-menu a {
        display: block;
        padding: 15px 0;
        height: auto;
    }

    /* Mobile three-level nav: vertical expand */
    .nav-menu .dropdown-menu {
        position: static;
        background: rgba(255,255,255,0.05);
        border-radius: 0;
        box-shadow: none;
        padding: 0 0 0 15px;
        display: none;
        min-width: 0;
        backdrop-filter: none;
    }
    .nav-menu li:hover > .dropdown-menu,
    .nav-menu li.active > .dropdown-menu {
        display: none; /* disable hover on mobile */
    }
    .nav-menu .dropdown.open > .dropdown-menu {
        display: block;
    }
    .nav-menu .dropdown-menu .has-submenu > .submenu {
        position: static;
        display: none;
        background: rgba(255,255,255,0.05);
        border-radius: 0;
        box-shadow: none;
        padding: 0 0 0 15px;
        min-width: 0;
        backdrop-filter: none;
        animation: none;
    }
    .nav-menu .dropdown-menu .has-submenu:hover > .submenu {
        display: none; /* disable hover on mobile */
    }
    .nav-menu .dropdown-menu .has-submenu.open > .submenu {
        display: flex;
        flex-direction: column;
    }
    .nav-menu .dropdown-menu .has-submenu > a::after {
        content: '▾'; /* Change arrow direction for mobile */
        right: 8px;
    }
    .nav-menu .dropdown-menu .has-submenu.open > a {
        background: rgba(0, 180, 255, 0.15);
        color: #fff;
    }

    .nav-toggle {
        display: flex;
        z-index: 1000;
    }

    .service-card,
    .case-card {
        flex: 0 0 calc(50% - 15px);
    }

    .clients-grid {
        gap: 15px;
    }
    .client-type {
        flex: 0 0 calc(33.333% - 10px);
    }
    .contact-info-blocks {
        flex-direction: row;
        flex-wrap: wrap;
    }
    .contact-block {
        flex: 0 0 calc(50% - 12px);
        max-width: none;
    }

    .about-preview {
        flex-direction: column;
    }

    .product-detail {
        flex-direction: column;
    }

    .solution-content {
        flex-direction: column;
    }

    .contact-grid {
        flex-direction: column;
    }

    .contact-info-blocks {
        gap: 16px;
    }
    .contact-block {
        flex: 0 0 calc(33.333% - 11px);
        max-width: none;
    }

    .footer-grid {
        flex-direction: column;
        gap: 30px;
    }

    .about-stats {
        flex-wrap: wrap;
    }

    .stat-item {
        flex: 0 0 calc(50% - 15px);
    }

    .culture-card,
    .certificate-card,
    .team-card,
    .promise-item {
        flex: 0 0 calc(50% - 15px);
    }

    .testimonial-card {
        flex: 0 0 calc(50% - 15px);
    }
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-desc {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .service-card,
    .case-card {
        flex: 0 0 100%;
    }

    .client-type {
        flex: 0 0 calc(50% - 10px);
    }
    .contact-info-blocks {
        flex-direction: column;
        align-items: center;
    }
    .contact-block {
        flex: 0 0 100%;
        max-width: 300px;
    }

    .section-title {
        font-size: 28px;
    }

    .page-header h1 {
        font-size: 32px;
    }

    .contact-form .form-row {
        flex-direction: column;
    }

    .stat-item {
        flex: 0 0 100%;
    }

    .culture-card,
    .certificate-card,
    .team-card,
    .promise-item,
    .traffic-item {
        flex: 0 0 100%;
    }

    .testimonial-card {
        flex: 0 0 100%;
    }

    .process-item {
        flex-direction: column;
        gap: 15px;
    }

    .process-item::before {
        display: none;
    }

    .process-number {
        flex: 0 0 60px;
        width: 60px;
        height: 60px;
        font-size: 20px;
    }
}

/* ===================================
   字体版权友好设置
   =================================== */
/* 使用开源字体或系统默认字体，避免版权问题 */
@font-face {
    font-family: 'OpenSourceFont';
    src: local('Microsoft YaHei'), local('Segoe UI'), local('Arial');
    font-style: normal;
    font-weight: normal;
}

/* 如果用户安装了思源黑体，优先使用 */
@font-face {
    font-family: 'SourceHanSans';
    src: local('Source Han Sans SC'), local('Noto Sans CJK SC'), local('Microsoft YaHei');
    font-style: normal;
    font-weight: normal;
}

/* 字体栈优化 - 使用系统默认字体，避免版权问题 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    font-family: 'Microsoft YaHei', 'Segoe UI', Arial, sans-serif;
}

/* ===================================
   客户Logo横排
   =================================== */
/* ===================================
   服务客户Logo - 横版无限滚动
   =================================== */
.client-logos-scroll-wrapper {
    overflow: hidden;
    padding: 20px 0;
    position: relative;
}
.client-logos-scroll-wrapper::before,
.client-logos-scroll-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 60px;
    z-index: 2;
    pointer-events: none;
}
.client-logos-scroll-wrapper::before {
    left: 0;
    background: linear-gradient(to right, #fff, transparent);
}
.client-logos-scroll-wrapper::after {
    right: 0;
    background: linear-gradient(to left, #fff, transparent);
}
.client-logos-track {
    display: flex;
    gap: 24px;
    animation: scrollLogos 30s linear infinite;
    width: max-content;
}
.client-logos-track:hover {
    animation-play-state: paused;
}
@keyframes scrollLogos {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
.client-logo-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.3s;
    min-width: 120px;
    flex-shrink: 0;
}
.client-logo-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.client-logo-item img {
    height: 50px;
    max-width: 120px;
    object-fit: contain;
}
.client-logo-placeholder {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0056b3, #00a8e8);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
    font-weight: 600;
}
.client-logo-name {
    font-size: 0.82em;
    color: #666;
    text-align: center;
    margin: 0;
}

/* ===================================
   友情链接
   =================================== */
.friend-links {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.friend-links h4 {
    color: #999;
    font-size: 14px;
    margin-bottom: 12px;
    text-align: center;
}

.marquee-wrapper {
    overflow: hidden;
    position: relative;
    width: 100%;
}

.marquee-track {
    display: flex;
    width: fit-content;
    animation: marqueeScroll 30s linear infinite;
}

.marquee-track:hover {
    animation-play-state: paused;
}

.marquee-content {
    display: flex;
    gap: 12px;
    white-space: nowrap;
}

@keyframes marqueeScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.friend-link-item {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    background: rgba(255,255,255,0.08);
    border-radius: 6px;
    color: #aaa;
    text-decoration: none;
    font-size: 13px;
    transition: all 0.25s;
    white-space: nowrap;
}

.friend-link-item:hover {
    background: rgba(255,255,255,0.15);
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 30px;
    color: #666;
    font-size: 13px;
}

.footer-bottom a {
    color: #666;
    text-decoration: none;
}
.clients-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    align-items: stretch;
}
.client-type {
    flex: 0 0 calc(16.666% - 17px);
    text-align: center;
    padding: 20px 10px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.client-type:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}
.client-icon {
    font-size: 36px;
    margin-bottom: 10px;
}

/* ===================================
   联系我们CTA - 横排布局
   =================================== */
.contact-cta {
    text-align: center;
    color: #fff;
}
.contact-cta h2 {
    color: #fff;
    margin-bottom: 10px;
}
.contact-cta > p {
    color: rgba(255,255,255,0.85);
    margin-bottom: 30px;
    font-size: 1.1em;
}
.contact-info-blocks {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    margin-bottom: 30px;
}
.contact-block {
    flex: 0 0 calc(33.333% - 16px);
    max-width: 280px;
    background: rgba(255,255,255,0.12);
    border-radius: 12px;
    padding: 24px 20px;
    text-align: center;
    transition: all 0.3s;
}
.contact-block:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-3px);
}
.contact-block .contact-icon {
    font-size: 32px;
    margin-bottom: 10px;
}
.contact-block h3 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 8px;
}
.contact-block p {
    color: rgba(255,255,255,0.9);
    margin: 0;
    font-size: 0.95em;
}

/* Article expand/collapse */
.article-expand-wrapper {
    margin-top: 12px;
}
.article-expand-content {
    margin-top: 12px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 3px solid var(--primary);
    line-height: 1.8;
    color: #444;
    font-size: 14px;
}
.article-expand-content img {
    max-width: 100%;
    border-radius: 6px;
}
.article-expand-content p {
    margin-bottom: 8px;
}